CN113225038B - Filtering device for inverter - Google Patents
Filtering device for inverter Download PDFInfo
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- CN113225038B CN113225038B CN202110332781.4A CN202110332781A CN113225038B CN 113225038 B CN113225038 B CN 113225038B CN 202110332781 A CN202110332781 A CN 202110332781A CN 113225038 B CN113225038 B CN 113225038B
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- magnetic core
- copper bar
- mode capacitor
- direct current
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- 238000001914 filtration Methods 0.000 title claims description 21
- 239000003990 capacitor Substances 0.000 claims abstract description 72
- 239000004593 Epoxy Substances 0.000 claims abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 71
- 229910052802 copper Inorganic materials 0.000 claims description 71
- 239000010949 copper Substances 0.000 claims description 71
- 239000000463 material Substances 0.000 claims description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 229910001053 Nickel-zinc ferrite Inorganic materials 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 239000002707 nanocrystalline material Substances 0.000 claims description 4
- 239000006223 plastic coating Substances 0.000 claims description 4
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 claims description 3
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 210000003205 muscle Anatomy 0.000 claims 2
- 238000005538 encapsulation Methods 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 238000003466 welding Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention relates to a filter device for an inverter, which comprises a mounting support, a first magnetic core, a second magnetic core, a differential mode capacitor, a first common mode capacitor, a second common mode capacitor and a third magnetic core, wherein the first magnetic core, the second magnetic core, the differential mode capacitor, the first common mode capacitor, the second common mode capacitor and the third magnetic core are fixed on the mounting support through epoxy encapsulation, the first magnetic core is arranged at the forefront end of the mounting support, the second magnetic core is arranged behind the first magnetic core, the differential mode capacitor is positioned in the center of the mounting support, the first common mode capacitor and the second common mode capacitor are respectively arranged at two sides of the differential mode capacitor, and the third magnetic core is arranged at the rearmost of the mounting support. Compared with the prior art, the filter device has the advantages of high integration level, good EMC performance, compact structure, small volume and the like.
Description
Technical Field
The invention relates to the field of filters, in particular to a filter device for an inverter.
Background
With the continuous development of new pure electric vehicles, the research on electromagnetic interference prevention measures of a motor controller of a new energy vehicle is also more and more in depth. The conventional solution is to install a plurality of EMC devices in the content of the motor controller to suppress interference, and the layout has a large number of parts and large occupied volume, because the assembly dispersion is difficult to play a role of centralized filtering, and although the requirements of EMC performance test can be barely met, as the current controller is gradually developed towards the direction of high EMC level, small volume and light weight, the conventional whole vehicle factory requires that the motor controller has to meet the EMC on-load test of 4 levels or even 5 levels, which is a very challenging requirement, and the conventional way of independently installing a plurality of EMC devices is difficult to meet the requirements of the whole vehicle factory, if a highly integrated filtering device is designed, more EMC devices are integrated into one filtering device to realize better filtering effect, so as to meet the requirements of normal length on electromagnetic compatibility. Therefore, it is now highly desirable to design a filtering device for an inverter that has a small overall installation volume, a compact structure, a light weight, and a good EMC filtering effect.
Disclosure of Invention
The invention aims to provide a filter device for an inverter.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a filter equipment for dc-to-ac converter, includes the erection support and fixes above that first magnetic core, second magnetic core, differential mode electric capacity, first common mode electric capacity, second common mode electric capacity, third magnetic core, first magnetic core, second magnetic core, differential mode electric capacity, first common mode electric capacity, second common mode electric capacity, third magnetic core all encapsulate above the erection support through epoxy, and first magnetic core setting is at the forefront of erection support, and the second magnetic core is installed at first magnetic core back, and differential mode electric capacity is in the central point of erection support, and first common mode electric capacity, second common mode electric capacity set up respectively in the both sides of differential mode electric capacity, and the third magnetic core sets up at the rearmost of erection support.
Preferably, the first magnetic core is installed in the first groove and sleeved around the input end of the direct current copper bar, the second magnetic core is installed in the second groove and the third groove and sleeved around the direct current copper bar close to the input end, the differential mode capacitor is fixed in the sixth groove, positive and negative pins of the differential mode capacitor are respectively electrically connected with the positive copper bar and the negative copper bar of the direct current copper bar, the first common mode capacitor is fixed in the fourth groove, a grounding pin of the first common mode capacitor is electrically connected with the first grounding plate, positive and negative pins of the first common mode capacitor are respectively electrically connected with the positive copper bar and the negative copper bar of the direct current copper bar, a grounding pin of the second common mode capacitor is electrically connected with the second grounding plate, positive and negative pins of the second common mode capacitor are respectively electrically connected with the positive copper bar and the negative copper bar of the direct current copper bar, and the third magnetic core is arranged in the seventh groove and the eighth groove and sleeved around the output end of the direct current copper bar.
Preferably, the direct current copper bar penetrates through the center of the whole mounting support and is integrated with the mounting support into a whole through plastic coating, and simultaneously penetrates through a first groove, a second groove and a seventh groove, the first groove is arranged at the forefront of the mounting support, the second groove and the third groove are all arranged right behind the first groove, the third groove is arranged right below the second groove, the seventh groove and the eighth groove are arranged at the rearmost of the mounting support, the eighth groove is arranged right below the seventh groove, the first grounding electrode plate and the second grounding electrode plate are arranged at the positions of four fixed support legs of the mounting support and are integrated with the mounting support into a whole through plastic coating, the fourth groove and the fifth groove are arranged at the middle position of the mounting support and are arranged at the two sides of the direct current copper bar respectively, and the sixth groove is arranged at the middle position of the fourth groove and the fifth groove and is arranged in the middle of the direct current copper bar respectively.
Preferably, the direct current copper bar comprises an input end, a first positive branch, a second positive branch, a third negative branch, a first output end and a second output end, wherein the first positive branch and the third negative branch are vertical, the tail ends of the first positive branch and the third negative branch are provided with a U-shaped bifurcation structure, the second positive branch and the second positive branch are vertical, the tail ends of the second positive branch and the second positive branch are provided with three U-shaped comb-shaped bifurcation structures, the input end is used for being electrically connected with an output wire harness of a whole car battery, and the first output end and the second output end are used for being electrically connected with an input end of a motor controller.
Preferably, the first groove is square annular structure with depth of 23mm, the cross sections of the second groove and the third groove are rectangular structures, the width is 15mm, the second groove is divided into three identical rectangular spaces by the direct current copper bar, and the three rectangular spaces are completely communicated with the upper part of the third groove.
Preferably, the fourth groove and the fifth groove are respectively provided with two branches at two sides of the direct current copper bar, the fourth groove and the fifth groove are adjacent, the section of the fourth groove is rectangular with the length of 17mm and the width of 10mm, the section of the fifth groove is rectangular with the length of 25mm and the width of 10mm, the sixth groove is provided with two branches and is positioned in the middle of the direct current copper bar, and a reinforcing rib is arranged in the middle of the sixth groove to separate the sixth groove from the sixth groove.
Preferably, the sections of the seventh groove and the eighth groove are rectangular structures, the width of each seventh groove is 25mm, the seventh groove is divided into three identical rectangular spaces by the direct current copper bar, and the three rectangular spaces are completely communicated with the upper part of the eighth groove.
Preferably, the bottom surface of the third groove is provided with three rectangular protruding ribs, so that the strength of the mounting support can be enhanced, and the bottom surface of the seventh groove is provided with five rectangular protruding ribs, so that the strength of the mounting support can be enhanced.
Preferably, the first grounding electrode plate and the second grounding electrode plate are both provided with a vertical bend, and the bent ends are respectively provided with a U-shaped bifurcation structure.
Preferably, the first magnetic core is a rectangular annular structure, the material of the first magnetic core is nanocrystalline material, the second magnetic core is composed of two parts, the two magnetic cores are made of nickel-zinc ferrite material, the upper magnetic core is of an E-shaped structure, the lower magnetic core is of a cuboid structure, the width of the magnetic core is 15mm, the upper magnetic core is arranged in the second groove, the lower magnetic core is arranged in the third groove to be matched with the third groove, the third magnetic core is composed of two parts, the two magnetic cores are made of manganese-zinc ferrite material, the upper magnetic core is of an E-shaped structure, the lower magnetic core is of a cuboid structure, the width of the magnetic core is 25mm, the upper magnetic core is arranged in the seventh groove, and the lower magnetic core is arranged in the eighth groove to be matched with the eighth groove.
Compared with the prior art, the invention has the following advantages:
(1) Seven filter devices, namely a first magnetic core, a second magnetic core, a differential mode capacitor, a first common mode capacitor, a second common mode capacitor and a third magnetic core are integrated on the filter device, wherein the differential mode capacitor shares two safety capacitors of 470nf, the first magnetic core is formed by winding a metal film made of nanocrystalline materials, and high-frequency electromagnetic noise input by a battery end of the whole vehicle can be restrained; the second magnetic core is formed by sintering and pressing nickel-zinc ferrite materials, so that low-frequency electromagnetic noise input by the battery end of the whole vehicle can be restrained; the third is the first of differential mode capacitors, is 470nf safety capacitor, and the positive and negative pins are connected with the positive plate and the negative plate of the direct current copper bar, so that the medium-frequency differential mode interference can be well restrained; the fourth is a first common-mode capacitor which is a pair of Y capacitors of 68nf connected in parallel and can well inhibit high-frequency common-mode interference on the high-voltage wire harness of the whole vehicle; the fifth path is the first one of the differential mode capacitors, is 470nf safety capacitor, and the positive and negative pins are connected with the positive plate and the negative plate of the direct current copper bar, so that the medium-frequency differential mode interference can be well restrained; the sixth path is a second common-mode capacitor which is a pair of Y capacitors of 220nf connected in parallel and can well inhibit high-frequency common-mode interference on the high-voltage wire harness of the whole vehicle; the seventh magnetic core is made of manganese-zinc ferrite material through sintering and pressing, and can inhibit low-frequency electromagnetic noise input by the battery end of the whole vehicle. The filtering device has the seven-channel link filtering, so that the current flowing into the high-voltage battery of the whole vehicle in the annual toilet can be ensured to be very pure, electromagnetic interference can not be generated on internal devices, the anti-interference capability of the whole inverter is improved, meanwhile, some electromagnetic interference in the inverter is prevented from being conducted out, interference is further generated on the outside, the first five channels of filtering can be selected according to actual requirements to meet the EMC test requirement of 4 levels of the whole vehicle, and all seven channels of filtering can be selected to meet the EMC test requirement of 5 levels and above of the whole vehicle.
(2) The mounting support structure of the invention integrates the direct current copper bar, the first groove, the second groove, the third groove, the first grounding polar plate, the fourth groove, the fifth groove, the sixth groove, the second grounding polar plate, the seventh groove and the eighth groove, can meet the requirement of mounting and fixing of six filter devices which are assembled simultaneously, has the advantages of small volume and high integration degree, can reduce the volume of a support, can reduce the internal mounting space of a motor controller, and has the characteristics of compact structure, high space utilization rate and strong suitability.
(3) The direct current copper bar is provided with the first positive branch, the second positive branch, the third negative branch, the first output end and the second output end, the first positive branch and the third negative branch are vertical, the tail ends of the first positive branch and the third negative branch are provided with the U-shaped forked structures, the second positive branch and the second positive branch are vertical, the tail ends of the second positive branch and the second positive branch are provided with the three U-shaped comb-shaped forked structures, the forked structures can be directly welded by adopting resistance welding, complex processes are avoided, the use of fasteners is reduced, the process is simple, the assembly is flexible, the reliability is high, and the direct current copper bar is suitable for mass production.
(4) The direct current copper bar is provided with the input end and the two output ends, the input end is used for being electrically connected with the output wire harness of the whole vehicle battery, the first output end and the second output end are both used for being electrically connected with the input end of the motor controller, the output end can be seen to be connected with a single motor controller or a double motor controller, matching of two states can be achieved simultaneously, adaptability is high, and the direct current copper bar is convenient to assemble and disassemble.
Drawings
Fig. 1 is an assembly schematic diagram of a filter device according to the present invention.
Fig. 2 is a schematic structural view of the mounting bracket of the present invention.
Fig. 3 is a schematic side view of the mounting bracket of the present invention.
Fig. 4 is a schematic structural diagram of a dc copper bar according to the present invention.
Fig. 5 is a schematic structural diagram of a grounding plate according to the present invention.
Fig. 6 is a schematic side view of a first magnetic core according to the present invention.
Fig. 7 is a schematic structural diagram of a second magnetic core according to the present invention.
Fig. 8 is a schematic structural view of a third magnetic core according to the present invention.
Graphic labeling: 1. the device comprises a mounting support, 2, a first magnetic core, 3, a second magnetic core, 4, a differential mode capacitor 5, a first common mode capacitor, 6, a second common mode capacitor, 7, a third magnetic core, 1-1, a direct current copper bar, 1-2, a first groove, 1-3, a second groove, 1-4, a third groove, 1-5, a first grounding polar plate, 1-6, a fourth groove, 1-7, a fifth groove, 1-8, a sixth groove, 1-9, a second grounding polar plate, 1-10, a seventh groove, 1-11, an eighth groove, 1-1-1, an input end, 1-1-2, a first positive branch, 1-1-3, a second positive and negative branch, 1-1-4, a third negative branch, 1-1-5, a first output end, 1-1-6 and a second output end.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples.
As shown in fig. 1, the filter device of the present invention comprises a mounting support 1, a first magnetic core 2, a second magnetic core 3, a differential mode capacitor 4, a first common mode capacitor 5, a second common mode capacitor 6 and a third magnetic core 7 fixed on the mounting support, wherein the mounting support 1 comprises a direct current copper bar 1-1, a first groove 1-2, a second groove 1-3, a third groove 1-4, a first grounding polar plate 1-5, a fourth groove 1-6, a fifth groove 1-7, a sixth groove 1-8, a second grounding polar plate 1-9, a seventh groove 1-10 and an eighth groove 1-11, the first magnetic core 2 is arranged in the first groove 1-2 and sleeved around the input end of the direct current copper bar 1-1, the second magnetic core 3 is arranged in the second groove 1-3 and the third groove 1-4, the differential mode capacitor 4 is fixed in the sixth groove 1-8, positive and negative pins of the differential mode capacitor are respectively and electrically connected with the positive electrode copper bar and the negative electrode copper bar of the direct current copper bar 1-1, the first common mode capacitor 5 is fixed in the fourth groove 1-6, a grounding pin of the differential mode capacitor is electrically connected with the first grounding electrode plate 1-5, positive and negative pins of the differential mode capacitor are respectively and electrically connected with the positive electrode copper bar and the negative electrode copper bar of the direct current copper bar 1-1, the second common mode capacitor 6 is fixed in the fifth groove 1-7, a grounding pin of the differential mode capacitor is electrically connected with the second grounding electrode plate 1-9, positive and negative pins of the differential mode capacitor are respectively and electrically connected with the positive electrode copper bar and the negative electrode copper bar of the direct current copper bar 1-1, the third magnetic core 7 is arranged inside the seventh groove 1-10 and the eighth groove 1-11 and is sleeved around the output end of the direct current copper bar 1-1.
As shown in fig. 2 and 3, the direct current copper bar integrated package plastic comprises a direct current copper bar 1-1, a first groove 1-2, a second groove 1-3, a third groove 1-4, a first grounding electrode plate 1-5, a fourth groove 1-6, a fifth groove 1-7, a sixth groove 1-8, a second grounding electrode plate 1-9, a seventh groove 1-10 and an eighth groove 1-11, wherein the direct current copper bar 1-1 penetrates through the center of the whole mounting support and is integrated with the mounting support into a whole, simultaneously penetrates through the first groove 1-2, the second groove 1-3 and the seventh groove 1-10, the first groove 1-2 is arranged at the forefront of the mounting support, the second groove 1-3 and the third groove 1-4 are all arranged right behind the first groove 1-2, the third groove 1-4 is arranged right below the second groove 1-3, the seventh groove 1-10 and the eighth groove 1-11 are arranged at the rearmost of the mounting support, the seventh groove 1-11 is arranged right below the fifth groove 1-3, the seventh groove 1-11 is arranged right below the fifth groove 1-7 and is arranged at the middle of the mounting support, the fifth groove 1-6 is arranged at the direct current support and is arranged at the middle of the position of the fifth groove 1-6, and the fifth groove 1-7 is arranged right below the fourth groove 1-6, and is arranged at the middle of the fifth groove 1-6 and the fifth groove is arranged right below the fifth groove 1-6. The first groove 1-2 is of a square annular structure with the depth of 23mm, the sections of the second groove 1-3 and the third groove 1-4 are of rectangular structures, the width is 15mm, the second groove 1-3 is divided into three identical rectangular spaces by the direct current copper bar, the three rectangular spaces are completely communicated with the upper part of the third groove 1-4, the fourth groove 1-6 and the fifth groove 1-7 are respectively provided with two separated direct current copper bars, the fourth groove 1-6 and the fifth groove 1-7 are adjacent, the section of the fourth groove 1-6 is of a rectangle with the length of 17mm and the width of 10mm, the section of the fifth groove 1-7 is of a rectangle with the length of 25mm and the width of 10mm, the sixth groove 1-8 is provided with two and is positioned in the middle of the direct current copper bar, one reinforcing rib is arranged in the middle of the third groove, the seventh groove 1-10 is of a rectangular structure, the width is 25mm, the seventh groove 1-10 is divided into three identical rectangular spaces by the direct current copper bar, the three rectangular spaces are completely communicated with the third groove 1-11, the bottom surface of the third groove 1-11 can be completely communicated with the third groove 1-10, and the bottom surface of the fifth groove can be provided with the third groove 1-10, and the bottom surface of the fifth groove can be completely communicated with the third groove 1-4.
Fig. 4 shows a schematic structure of a dc copper bar, where the dc copper bar 1-1 includes an input end 1-1-1, a first positive branch 1-1-2, a second positive branch 1-1-3, a third negative branch 1-1-4, a first output end 1-1-5, and a second output end 1-1-6, the first positive branch 1-1-2 and the third negative branch 1-1-4 are all vertical, and each end has a U-shaped bifurcation structure, the second positive branch 1-1-3 is all vertical, each end has three U-shaped comb-shaped bifurcation structures, the input end 1-1-1 is used for being electrically connected with an output harness of a whole vehicle battery, and the first output end 1-1-5 and the second output end 1-1-6 are all used for being electrically connected with an input end of a motor controller.
Fig. 5 is a schematic structural diagram of a first grounding electrode plate and a second grounding electrode plate, where the first grounding electrode plate 1-5 and the second grounding electrode plate 1-9 are respectively provided with a vertical bend, and the bent ends are respectively provided with a U-shaped bifurcation structure.
Fig. 6 is a schematic diagram of a first magnetic core structure, where the first magnetic core 2 is a rectangular ring structure, and the material of the first magnetic core is a nanocrystalline material.
Fig. 7 shows a schematic diagram of a second magnetic core structure, where the second magnetic core 3 is composed of two parts, the two magnetic cores are made of nickel-zinc ferrite materials, the upper part of the magnetic core is in an E-shaped structure, the lower part of the magnetic core is in a cuboid structure, the width of the magnetic core is 15mm, the upper part of the magnetic core is installed in the second groove 1-3, and the lower part of the magnetic core is installed in the third groove 1-4 to be matched with the third groove.
FIG. 8 shows a schematic diagram of a third magnetic core structure, where the third magnetic core 7 is composed of two parts, the two magnetic cores are made of Mn-Zn ferrite material, the upper part of the magnetic core is in an E-shaped structure, the lower part of the magnetic core is in a cuboid structure, the width of the magnetic core is 25mm, the upper part of the magnetic core is installed in the seventh slot 1-10, and the lower part of the magnetic core is installed in the eighth slot 1-11 for cooperation use
The specific assembly process of the filter device for the inverter is as follows:
1. first, the first grounding electrode plate 1-5, the direct current copper bar 1-1 and the second grounding electrode plate 1-9 are fixed into a complete mounting support through integrated plastic molding for mounting and using of a subsequent filtering device.
2. Then, encapsulating the first magnetic core 2 in the first groove 1-2 by epoxy; placing the upper part of the second magnetic core 3 in the second groove 1-3, then placing the lower part in the third groove 1-4, and finally encapsulating and fixing by using epoxy; the upper part of the third magnetic core 7 is placed in the seventh groove 1-10, the lower part is placed in the eighth groove 1-11, and finally the third magnetic core is fixed by epoxy encapsulation.
3. Next, the differential mode capacitor 4 is fixed in the sixth groove 1-8 by epoxy sealing, the first common mode capacitor 5 is fixed in the fourth groove 1-6 by epoxy sealing, and the second common mode capacitor 6 is fixed in the fifth groove 1-7 by epoxy sealing.
4. Finally, the positive pin of the first differential mode capacitor 4 is fixed with the first positive branch 1-1-2 by resistance welding, the negative pin of the second differential mode capacitor 4 is fixed with the second positive and negative branch 1-1-3 by resistance welding, the negative pin of the second differential mode capacitor 4 is fixed with the third negative branch 1-1-4 by resistance welding, the grounding pin of the first common mode capacitor 5 is fixed with the U-shaped bifurcation of the first grounding polar plate by resistance welding, the positive and negative pins of the first common mode capacitor 5 are respectively fixed with the second positive and negative branch 1-1-3 by resistance welding, the grounding pin of the second common mode capacitor 6 is fixed with the U-shaped bifurcation of the second grounding polar plate by resistance welding, and the positive and negative pins of the second common mode capacitor 6 are respectively fixed with the second positive and negative branch 1-3 by resistance welding, so as to complete the assembly of the whole filter device.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (9)
1. The filter device for the inverter is characterized by comprising a mounting support, a first magnetic core, a second magnetic core, a differential mode capacitor, a first common mode capacitor, a second common mode capacitor and a third magnetic core which are fixed on the mounting support, wherein the first magnetic core, the second magnetic core, the differential mode capacitor, the first common mode capacitor, the second common mode capacitor and the third magnetic core are all encapsulated on the mounting support through epoxy, the first magnetic core is arranged at the forefront end of the mounting support, the second magnetic core is arranged behind the first magnetic core, the differential mode capacitor is positioned in the center of the mounting support, the first common mode capacitor and the second common mode capacitor are respectively arranged at two sides of the differential mode capacitor, the third magnetic core is arranged at the rearmost of the mounting support,
the first magnetic core is arranged in the first groove and sleeved around the input end of the direct current copper bar, the second magnetic core is arranged in the second groove and the third groove and sleeved around the direct current copper bar close to the input end, the differential mode capacitor is fixed in the sixth groove, positive and negative pins of the differential mode capacitor are respectively electrically connected with the positive copper bar and the negative copper bar of the direct current copper bar, the first common mode capacitor is fixed in the fourth groove, a grounding pin of the first common mode capacitor is electrically connected with a first grounding electrode plate, positive and negative pins of the first common mode capacitor are respectively electrically connected with the positive copper bar and the negative copper bar of the direct current copper bar, a second common mode capacitor is fixed in the fifth groove, a grounding pin of the second common mode capacitor is electrically connected with a second grounding electrode plate, positive and negative pins of the second common mode capacitor are respectively electrically connected with the positive copper bar and the negative copper bar of the direct current copper bar, and the third magnetic core is arranged in the seventh groove and the eighth groove and sleeved around the output end of the direct current copper bar.
2. The filtering device for an inverter according to claim 1, wherein: the direct current copper bar penetrates through the center of the whole mounting support and is integrated with the mounting support into a whole through plastic coating, and simultaneously penetrates through a first groove, a second groove and a seventh groove, the first groove is formed in the forefront of the mounting support, the second groove and the third groove are all formed in the right rear of the first groove, the third groove is located under the second groove, the seventh groove and the eighth groove are formed in the rearmost of the mounting support, the eighth groove is located under the seventh groove, the first grounding electrode plate and the second grounding electrode plate are arranged at the four fixed support leg positions of the mounting support and are integrated with the mounting support into a whole through plastic coating, the fourth groove and the fifth groove are formed in the middle of the mounting support and are respectively arranged on two sides of the direct current copper bar, and the sixth groove is formed in the middle of the fourth groove and the fifth groove and is respectively arranged in the middle of the direct current copper bar.
3. The filtering device for an inverter according to claim 1, wherein: the direct current copper bar comprises an input end, a first positive branch, a second positive branch, a third negative branch, a first output end and a second output end, wherein the first positive branch and the third negative branch are vertical, the tail ends of the first positive branch and the third negative branch are provided with a U-shaped bifurcation structure, the second positive branch and the second positive branch are vertical, the tail ends of the second positive branch and the second positive branch are provided with three U-shaped comb-shaped bifurcation structures, the input end is used for being electrically connected with an output wire harness of a whole car battery, and the first output end and the second output end are both used for being electrically connected with the input end of a motor controller.
4. The filtering device for an inverter according to claim 1, wherein: the first groove is the square annular structure of degree of depth 23mm, the cross-section of second groove and third groove all is rectangle structure, and the width is 15mm, and the second groove is cut apart into three same rectangle spaces by direct current copper bar, and the upper portion of three rectangle spaces all and third groove communicates completely.
5. The filtering device for an inverter according to claim 1, wherein: the fourth groove and the fifth groove are respectively provided with two direct current copper bars, the fourth groove and the fifth groove are adjacent, the section of the fourth groove is rectangular with the length of 17mm and the width of 10mm, the section of the fifth groove is rectangular with the length of 25mm and the width of 10mm, the sixth groove is two and is positioned in the middle of the direct current copper bars, and a reinforcing rib is arranged in the middle of the sixth groove and is separated from the sixth groove.
6. The filtering device for an inverter according to claim 1, wherein: the sections of the seventh groove and the eighth groove are rectangular structures, the width of each seventh groove is 25mm, the seventh groove is divided into three identical rectangular spaces by the direct current copper bar, and the three rectangular spaces are completely communicated with the upper part of the eighth groove.
7. The filtering device for an inverter according to claim 1, wherein: the bottom surface in the third groove has three rectangle protruding muscle, can play reinforcing installation support intensity effect, the bottom surface in the seventh groove has five rectangle protruding muscle, can play reinforcing installation support intensity effect.
8. The filtering device for an inverter according to claim 1, wherein: the first grounding polar plate and the second grounding polar plate are respectively provided with a vertical bend, and the bent ends are respectively provided with a U-shaped bifurcation structure.
9. The filtering device for an inverter according to claim 1, wherein: the first magnetic core is of a rectangular annular structure, the material of the first magnetic core is a nanocrystalline material, the second magnetic core is composed of two parts, the two magnetic cores are made of nickel-zinc ferrite materials, the upper magnetic core is of an E-shaped structure, the lower magnetic core is of a cuboid structure, the width of the magnetic core is 15mm, the upper magnetic core is arranged in the second groove, the lower magnetic core is arranged in the third groove to be matched with the third groove, the third magnetic core is composed of two parts, the two magnetic cores are made of manganese-zinc ferrite materials, the upper magnetic core is of an E-shaped structure, the lower magnetic core is of a cuboid structure, the width of the magnetic core is 25mm, the upper magnetic core is arranged in the seventh groove, and the lower magnetic core is arranged in the eighth groove to be matched with the eighth groove.
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| CN202110332781.4A CN113225038B (en) | 2021-03-29 | 2021-03-29 | Filtering device for inverter |
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| CN202110332781.4A CN113225038B (en) | 2021-03-29 | 2021-03-29 | Filtering device for inverter |
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| CN113225038B true CN113225038B (en) | 2024-03-29 |
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| CN202384987U (en) * | 2011-12-31 | 2012-08-15 | 成都芯通科技股份有限公司 | Magnetic integration device |
| CN103997311A (en) * | 2014-06-09 | 2014-08-20 | 西安电子科技大学 | 3-D full integration EMI filter based on planar coupling inductor |
| CN111292931A (en) * | 2018-12-10 | 2020-06-16 | 西门子电动汽车动力总成系统(上海)有限公司 | Electronic equipment and filter inductor thereof |
| CN111292930A (en) * | 2018-12-10 | 2020-06-16 | 西门子电动汽车动力总成系统(上海)有限公司 | Electronic equipment and filter inductor thereof |
| CN210958295U (en) * | 2020-03-18 | 2020-07-07 | 北京融和创技术有限公司 | Adjustable EMC filter |
| CN212367070U (en) * | 2020-07-24 | 2021-01-15 | 蔚然（南京）动力科技有限公司 | Filter |
-
2021
- 2021-03-29 CN CN202110332781.4A patent/CN113225038B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202384987U (en) * | 2011-12-31 | 2012-08-15 | 成都芯通科技股份有限公司 | Magnetic integration device |
| CN103997311A (en) * | 2014-06-09 | 2014-08-20 | 西安电子科技大学 | 3-D full integration EMI filter based on planar coupling inductor |
| CN111292931A (en) * | 2018-12-10 | 2020-06-16 | 西门子电动汽车动力总成系统(上海)有限公司 | Electronic equipment and filter inductor thereof |
| CN111292930A (en) * | 2018-12-10 | 2020-06-16 | 西门子电动汽车动力总成系统(上海)有限公司 | Electronic equipment and filter inductor thereof |
| CN210958295U (en) * | 2020-03-18 | 2020-07-07 | 北京融和创技术有限公司 | Adjustable EMC filter |
| CN212367070U (en) * | 2020-07-24 | 2021-01-15 | 蔚然（南京）动力科技有限公司 | Filter |
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| CN113225038A (en) | 2021-08-06 |
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